What are the most effective ways to test new HTML features in Internet Services?

If your project involves server-side code (e.g., PHP, Node.js), a local server is essential for testing. Running your website on a local server ensures that it's not accessible to the public and that is perfect since you can test features without exposing them to potential security risks. Depend on your proyect you will have to install some local servers or others so look the specific recommendations for your project, some of the local servers that will help you with this task are: - Node.js and tools like `http-server` or `live-server`. - Python: Python's built-in `http.server`. - XAMPP/WAMP/MAMP: These packages bundle Apache, MySQL, and PHP for a complete local development environment.

HTML features in code editors: 1. Syntax Highlighting: Colors and fonts highlight code parts for error identification and readability. 2. Code Completion: Editors suggest tags, attributes, properties as you type, reducing typos and saving time. Emmet can speed up HTML coding. 3. Error Checking: Real-time code analysis highlights issues like missing tags, syntax errors, or invalid attributes. 4. Live Reloading: Integrated with local servers for auto-refreshing the page on saving changes. 5. Popular Editors: VS Code (powerful, customizable), Sublime Text (lightweight, fast), Atom (open-source, community-driven).

You can use browser developer tools to test HTML in the following way: 1. Right-click on an element on the page and choose the 'Inspect' option from the menu. 2. Use the Elements tool to inspect, edit, and debug your HTML and CSS. You can edit in the tool while displaying the changes live in the browser, but remember to save them in your project later! 3. Debug your HTML using the DOM tree, and inspect and work on the CSS for your webpage. 4. Discover the power of each DevTools panel, you can test a lot of things with them like speed loading, how your page is render, tests on mobile devices sizes, behaviours in different screens orientations and formats...

Key aspects of cross-browser testing include: 1) Browser Compatibility: Test the website on popular browsers such as Chrome, Firefox, Safari, and Edge. 2) Browser Versions: Ensure compatibility across different versions of each browser, as updates can introduce changes. 3) Responsive Design: Confirm that the website is responsive and adapts well to different screen sizes and devices. 4) CSS and Styling: Check for consistent styling and layout across browsers. 5) JavaScript Compatibility: Verify that JavaScript-based interactions and functionalities are consistent. 6) Debugging Tools:Utilize browser developer tools for debugging and identifying browser-specific issues.

Cross-browser testing tools are indeed a great way to ensure that your HTML code works well across different browsers and devices - I usually use BrowserStack for this, which even allows you to create browser automation tests, visual tests, accessibility tests and more. Using these types of tools is important because browser tools may not be correct when they try to simulate different devices, and it is even more important to use these tools when testing new HTML features to avoid O.S., browser, screen bugs.

I like to use an extension for this directly in my code editor VSCode, it is called HTMLHint and it allows me to get real time feedback and customise the rules to fit your coding style.

HTML validation tools help ensure that your HTML code follows standards and is free of errors. Two commonly used tools are: 1) W3C Markup Validation Service: Provided by the World Wide Web Consortium (W3C). Checks HTML code against W3C standards. Highlights errors and provides suggestions for corrections. 2) Nu HTML Checker (NuValidator): Maintained by the Web Platform Tests project. Offers detailed reports on errors and warnings in the HTML code. Using validation tools is crucial for maintaining code quality, improving cross-browser compatibility, and enhancing overall web accessibility. Regularly validating your HTML helps ensure a consistent and error-free user experience across different platforms and devices.